公开(公告)号：US20240145134A1

公开(公告)日：2024-05-02

申请号：US18175139

申请日：2023-02-27

Applicant: TDK CORPORATION

Inventor： Toshiki GUSHI ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA ,  Isao KANADA

IPC: H01F1/00 ,  G01N27/72

CPC classification number: H01F1/0054 ,  G01N27/72

Abstract: A polymer particle containing magnetic material includes a core and a polymer layer. The core includes magnetic fine particles. The polymer layer is located outside the core and surrounds the core. A shape ratio (Ric) is defined in each of the magnetic fine particles by dividing a diameter (Di) of an inscribed circle of the magnetic fine particle by a diameter (Do) of a circumscribed circle of the magnetic fine particle. The shape ratio (Ric) of the magnetic fine particle is 0.50 or more and 0.94 or less. The diameter (Di) of the magnetic fine particle is 5 nm or more. The diameter (Di) and the shape ratio (Ric) of the magnetic fine particle satisfy a relation formula of Di≤9.28×e{circumflex over ( )}(1.17×Ric).

公开(公告)号：US20250126806A1

公开(公告)日：2025-04-17

申请号：US18999700

申请日：2024-12-23

Applicant: TDK CORPORATION

Inventor： Toshiki GUSHI ,  Shogo Yamada ,  Tatsuo Shibata ,  Tomoyuki Sasaki

IPC: H10B61/00

Abstract: This domain wall motion element includes a first magnetoresistance effect element and a first transistor. A first domain wall displacement layer of the first magnetoresistance effect element is electrically connected to a first active region of the first transistor. The length of the first magnetoresistance effect element in a first direction is longer than the length thereof in a second direction. The length of a first gate in the first direction is longer than the length thereof in the second direction. The length of the first magnetoresistance effect element in the first direction is longer than the length of the first gate in the first direction. A first gate length direction connecting the first active region and a second active region intersects with the first direction.